Raman cooling

Chemistry

Scattering

Materials science

X-ray Raman scattering

Magnetic dipole

Moment (physics)

Physics

Resolved sideband cooling

Electron cooling

Laser cooling

Electron

Dipole

Optics

Astronomy

Inelastic scattering

Quantum mechanics

Atomic physics

Electric dipole moment

Molecule

Doppler effect

Electric dipole transition

Laser

Classical mechanics

Physical chemistry

Nuclear physics

Transition dipole moment

Polarization (electrochemistry)

Physical Review Letters

We demonstrate one-dimensional sub-Doppler laser cooling of a beam of YbF molecules to 100 μK. This is a key step towards a measurement of the electron's electric dipole moment using ultracold molecules. We compare the effectiveness of magnetically assisted and polarization-gradient sub-Doppler cooling mechanisms. We model the experiment and find good agreement with our data.

Laser Cooled YbF Molecules for Measuring the Electron’s Electric Dipole Moment